Tripping mechanism for rotary printing-presses.



R. MIEHLE.

TRIPPING ME3HANISM FOR ROTARY PRINTING PRE SSES.

APPLICATION FILED APR.13. 19H.

Patented Apr. 15,1919.

5 SHEETSSHEET l.

R. MIEHLE.

TRIPPIN G MECHANISM FOR ROTARY PRINTING PRESSES.

APPLICATION FILED APR. 13. I91].

1,300,289. I Patented Apr. 15,1919.

5 SHEETS-SHEET Z- R. MIEHLE.

TRIPPING MECHANISM FOR ROTARY PRINHNG PRESSES.

APPLICATION FILED APR. 13. 1917.

R. MIEHLE. TRIPPING MECHANISM FOR ROTARY PRINTING FRESSES.

APPLICATION FILEDAPII. I3. I9I7.

Patented Apr. 15, 1919.

5 SHEET$-SHEET 4- R. MIEHLE. I TRIPPING MECHANISM FOR ROTARY PRINTING PRESSES.

APPLlCATION FILED APR. 13. I917.

Patented Apr. 15, 1919.

5 SHEETSSHEET 5 jiz/aew a)" z'ozertifi/zz I I 1 i UNITED STATES PATENT orries.-

ROBEBT HIEHLE, CHICAGO, ILLINOIS.

'i'mrrme mnonamsn To all whom it may concern: Be it known that I, Ronnn'r Mmnnu, cit 1- zen of the United States, residing at Chlcago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Tripping Mechanism for Rotary Printing-Presses, of which the following is a full, clear, concise, and exactdescription.

My invention relates to tripping mechanisms for printing presses and has particular relation to planographic or ofi'set machines although'many of the features thereof are applicable to other types of two impression rotary machines in which during the normal operation thereof the impression elements are not moved out of and restored back into impression relation during each cycle. of operation. v

One of the features of my invention re sides in providing controlling devices for presses of the above described character, which are simple in construction and operation and which are adapted to be used in conjunction with two impression rotary machines equipped with tripping mechanism similar'to that disclosed in my co-pendin application Serial No. 157,979, filed Mare 28, 1917, for tripping mechanism for printing presses, whereby the impression elements may be tripped in proper sequence with a minimum efi'ort, the advantages of said tripping mechanism obtaining unimpaired.

The controlling devices above mentioned are of particular advantage in planographic or ofi'set machines wherethe tripping and restoration functions of the various impression elements follow each other in close sequence, the operation of the controlling devices allowing suflicient time for all the functions to be performed without necessitating closely adjusted mechanisms which are liable to become deranged.

There are numerous specific features embodied in the controlling devices above mentioned which are adapted to operate in harmony with each other to afford a complete controlling device but whose utility is not restricted to such combination. r i

One of these features consists in providing automatic mechanism for controlling the tripping function of the tripping mechanism of the second impression element-,, which mechanism preferably consists in a means operated by the movement of the first vidin Speoincation of Letters Patent. P t t 15, 19 Application mea a ru 1a, 1917. Serial No. 181,689.

for controlling the tripping function of said tripping mechanism and which preferably operates upon a coupler adapted to control the connection between the second impression element and the means for effectmg the'tripping movement thereof. This feature is supplemented by attendant con trolledmeans for preventing the coupler from operating to eifect a connection between the second impression element, and attendant controlled means for effecting connection of the second cylinder with the means for effecting the tripping movements thereof to allow the operator to manually control the tripping movement of the second impression element,

Another of these features resides in proa control mechanism in addition to the a ove noted automatic mechanism for controlling therestoring function of the tripping mechanism of the second impression element, which is preferably manually controlled, and which also controls the tripelement for the same purpbse as it controls the restoring function of the tripping mechanism of the second impression element.

This control mechanism preferably is adapted when in one position to cause the tripping mechanism of the first impression 4 element .to trip the first impression element and while it is in this position to prevent the tr1ppmg'mechanisn1 of thesecond impression element from functioning to re-- store, and, if. it controls the restoring function of the tripping mechanism of the first impression element, to prevent itfrom functioningalso, and when in another position to prevent the tripping mechanism of the first impression element from functioning to trip and while in this position to prevent the tripping mechanlsm of the second impression element from functioning, and,'if

it controls the restoring function of the tripping mechanism of the first impression element, to prevent it from functioning also.

Another feature resides in providmg a moistening mechanism in operative relation with' the form cylinder of a rotary planographic press and means whereby the movement' of the form cylinder out of printing position operates to move the mois'tening mechanism partially out of relation w th the form cylinder whereby the form cylinder is not moistened too much while running in tripped position.

The invention-in the foregoing and other characteristics will be fully described in connection with the accompanying drawings and will be set forth in the claims. In

the drawings Figure 1 is a view in side eleview similar to Fig. 3

addition, the printing and form cylinders being out of printing relation; Fig. 4 is a exceptlng that the printing-and form cylinders are in prlntlng relation; Fig. 5- is similar to Fig 3 excepting that the form cylinder is in printing relation with the printing cylinder; and Fig.

6 is a view in end elevatio'n,.with parts in section, of thetripp'ing cam mechanlsm.

Like parts are lndicated by similar characters of reference throughout the different figures.

The mechanism herein illustrated and described is similar in many respects to that shown in my co-pending application, Serial No. 157,979, filed March '28, 1917.

The power for operating the press is derived from a driving shaft 1 upon which there is driving spur pinion 2 upon one side and near one end of the press. This spur pinion meshes with a spur gear 3 fixed upon a stub shaft 4 mounted in the extension 5 bolted to the base of the press frame. The

spur gear 3 meshes with a spur gear 6 mounted freely upon a shaft 7 upon which shaft the impression cylinder 8 is fixed. The shaft 7 is journaled in" boxes 7 that are contained in housings on the side frames of the press. These boxes are normally fixed 5 to give a fixed axis of rotation of the impression cylinder 8 but are vertically adjustable by means of the adjustin screws 7 The gear 9 is fixed upon shaft and meshes with a spur gear 10 which is fixed upon a stub shaft 11 j ournaled in the extension 12 bolted to the base of the press frame. Tire spur gear 10 is co-axial with the spur gear 10 and is also 'fixed upon the stub shaft '11 by being bolted to the gear 10 with bolts 11 The spur gear 10 is in mesh with a spu'r'gear 10 fixed with respect to the spur gear 6 by being fixedly mounted upon the hub 6 of this latter gear.

This hub 6 is journaled in a vertically adjustable bracket 12 carried upon the extension 12. This gear 10 is a cylinder gear mounted at an end of the printing cylinder 13 but not in fixed relation to the shaft 14 of this cylinder 13. The cylinder shaft 14 is journaled in boxes '15 that are mounted for vertical movement between guides 16 upon the press frame 17, the vertically movable boxes permitting movement of the printing cylinder 13 transversely to the axes of the cylinder gear 10 and the axis of the cylinders 8 and 13. The distance between the axes of the gears 9 and 10 is fixed as their shafts 7 and 11 have fixed axes of rotation. As the printin cylinder 13 is adjustable with respect to t c axis of its cylinder gear 10 flexiblemeans are employed for connecting said cylinder gear. 10 to cylinder 13. This flexible means preferably includes a unison ring or. member 18 in the form of a disk which permits the axis of the cylinder gear 10 to remain fixed while the axis of the cylinder may shift, this disk or connecting means 18 being shiftable with respect to said cylinder 13 and said cylinder gear 10. The

disk 18 carries two diametrically opposite slotted guideways 19 the slots of which receive the diametrically opposite k driving blocks 20 that are carried by the gear 10, these blocks 20 and the slots in the guideways 19 being 'upon'the same-diametrical line whereby. the disk 18 may shift with respect to the gear 10 along the diametrical line containing the blocks 20. The disk 18 is formed with a groove 21 disposed along the diametrical line that is at right angles to the diametrical line containing the driving blocks 20 and guideways 19. The oove 21 receives a rib 22 carried by the disk 23 and disposed on the diametrical line of this disk. The disk 23 is fixed with respect to the shaft 14 and the cylinder 13. By the means described for connecting the cylinder gear 10 with the printing cylinder 13 the peripheral speed of such cylinder will be maintained the same as the peripheral speed of the cylinder gear 10 (which latter speed is measured at the pitch circle or driving line of the gear teeth) even though said cylinder andcylinder gear are laterally shifted relatively to one another causing relative displacement of their axes. While the printing cylinder 13 is in printing position its axis is preferably coincident with the axis of the cylinder gear 10 but when the cylinder 13 is tripped out of printing position its axis is then' noncoincident with the axis of its cylinder gear 10 but this cylinder gearmaintains'its own .fixed axis so that the meshing thereof with the driving gear'9 and the driving thereof is not disturbed. The spur gear 9 meshes with spur gear 24 fixed upon shaft 25 journalcd in the side frame 17. The sheet transfer cylinder 26 is fixed upon the shaft 25 and is provided with bearers 26 The driven gear 9 thus drives the spur gear 24 to rotate the sheet transfer cylinder 26 at the peripheral speed of the impression cylinder 8. In the press illustrated the cylinders 8 and 26 are each plural revolution cylinders and the cylinder 13 is a single revolution cylinder, each of the cylindersS and 26 rotating two revolutions to each revolution of the cylinder 13.

The tripping mechanism employed may be of the general nature illustrated 11']. my Pat- .ent No. 550,992, dated December 10, 1895,

with necessary changes. The foot key 40 is normally held up by a spring 41 and is connected by a bell crank 42 with a connecting link 43- that is connected with a rocker arm 44 that in turn is fixed upon a rod 45 and on which rod there is fixed a cam arm 46 carrying a trip cam portion 47. Whenever the foot key is depressed the rod 45 of the 47 to allow the hook 48 to come into engage ment with the tooth 49. The part 50 of hook 48, the swinging part 51 of the arm 52 and the part 53 of-tooth 49 constitute elements of a coupler .that connects the print-- ing cylinder 13'with its tripping cam 54. The tripping cam 54 is rotated by a gear 55 upon which the cam is fixedly located, the

side.

gear 55 in turn being rotated by the pinion 56 which turns upon the stud 57 which 'is fixed to the frame of the press, the pinion 56 meshing with pinion 57 which is in fixed connection with the spur gear 58 (gears 56 and 58 turning on stud 58 that is in mesh with the pinion 59 carried upo-n'the outer end of the shaft .1 opposite to that which carries the. pinion 2, and which pinion 2 meshes with the gear wheel3, the shaft 1 passin through the machine from side to he cam groove 60 in cam 54 engages a cam roller 61.11p0n the arm 52 loose on shaft 62 that passes from side to side'of the machine and to which shaft the tooth 49 and the stop finger 49 are fixed.- The roller 61 is mounted upon the stud 63 upon the inner end of which the hook 48 is mounted to swing. The shaft 62 carries two eccentrics with each other by bolts 66 A stationary spring supporting ledge 66 is carried by thepress frame, there being one such ledge upon each side of the press. This stationary ledge 66 passes between the sides of the respective vertically movable extension 66 and supports the springs 66. These springs abut the respective shaft boxes 15 and support a large part of the weight of the cylinder 13, there beingsuflicient weightnnsupported by these springs to cause the cylinder to descend when the eccentrics 64 are turned to lower positions. The are a b of the cam groove 60' (Fig. 5) is concentric with respect to the shaft 67 of the cam. I'he cam roller' 61 is not bodily moved while engaging this part of the cam groove a 5 whereby the arm 52 is then. at rest. The hook 48 carries a cam roller 68 that may bear upon the operating tripping cam portion 47 of the arm 46. The arm 52 carries a stop pin 69 and'hook 48 has a lug 70, the elements 69 venting the hook 48 from separating any farther from the tooth 48 than illustrated.

Each pair of eccentrics 64 upon the same shaft 62 has the position illustrated in Fig. 4 when the printing cylinder 13 is in its nor mal operating position, the centers of these eccentrics being normally positioned slightly to the left; of the vertlcal. line passing through the centers ofjthe shaft 62 and the shaft of the printing cylinder and being between this line and the stationary stop pins- 71. As teeth 49 and 49 .are.in fixed relaand'70 pre-- tion' to the eccentrics 64 the stop pg; 1 holds I the shaft 62 from counter cloc i'se rotation to. hold the printing cylinder 13- in working position. turned clockwise the eccentrics 64 fixed upon the shaft, are also turned wise so that the printing cylinder is lowered being to non-printing position (Fig. 3). Thisrotation of the shaft 62 and the eccentrics 64 cannot occur until after the part 50 of hook 48 isbrought into position toenable it to be engaged with the lower side of the tooth 49,

When the shaft 62 is clock-' following the depression of the foot key (at a time when the cylinder 13 isin an impression position) by the press attendant to lower the arm 46 andthe cam part 47 thereon to' permitthe book 48 to swing. downwardly into the hook engaging position. Operative engagement of the part 50 of the hook 48 with the tooth 49 to effect the trip ping movement can only occur while t e arcal portion a b of the cam groove 60 is passing by the cam roller 61 which is when the line b (shown on the cylinder 13, Fig.

5) has passed from the line a to the position of the'line 5 This tripping may be efl'ected at a time when the cylinder 13 is in a printing position and only during the time the leading edge of the printing form 13 travels through the are a b? and during the time the cam roller 61 is passing over the cam portion" of the cam groove 60 between the side a of the are a b. and the shaft 72. The part 50 of the hook '48 (assuming that the attendant has pressed down the key 40 to drop. the arm 46 to permit the hook 48 to engage the tooth 49) pulls the tooth 49 in a clockwise direction (while the leading end of the form 13 is passing between the lines a b to permit the printing cylinder 13 to be lowered by its own weight (Fig. 5). When viouslyreleased, whereupon the swinging.

extension 51 of the arm 52'pushes upon the lug 53 carried by the tooth 49 to turn th1s tooth and the eccentrics 64 fixed with respect thereto counter-clockwise back to the normal .position, whereby the restoring movement of the eylinderlB-is effected. In coming back to this position the eccentrics 64 raise the printing cylinder to working position. It is to be understood that the roller 68 (upon hook 48) supports the hook while this roller 68 rides over the tripping cam portion 47 when the arm 46 that carries this cam 47 is in its normal raised position and while the printing cylinder is in its normal operating position. The cam arm 46 may be lowered at i any time but should this arm be lowered while the roller 61 is not in the areal portion 22,?) of the cam slot 60 the swingingend of thethook will ride upon the crown of the tooth 49 until the roller 61 is received in the areal portion a b of said cam groove 60.

The cylinder 13 is maintained in its tripped position, while the cylinder 13 is being tripped during a number of successive cycles, by the same foot key that causes the cylinder 13 to be tripped. In order that the key 40 may serve this purpose it is in operating connection with a cam lever 40 that is pivotally mounted upon the .frame of the machine, the connection of the foot key with the cam lever 40? including a link 40 pivotally connected at one end with the lever 40 and at its other end with the arin 42. When the foot key 40 is depressed the lower end of the-cam lever 40 is raised to be in the path of .movement of and to engage the roller 40 'carried by the rocking dog 51 pivoted at 51 on the rear side of the arm 52, whereby this rocking dog is raised and relieved of its function of coupling the tripping mechanism of cylinder 13' with such cylinder to prevent this tripping mechanism from raising the cylinder I 13 to printing position. In performing this function the dog 51 normally engages the part 53 of the tooth 49 and as the dog 51 is pivoted at 51 to the'arm 52 the arm 52 is, through the intermediation of the dog, en-

gaged with the part 53 of the tooth 49. Thisdog thus, in its normal position, serves as a coupler for connecting the tripping mechanism of cylinder 13 with the cylinder to enable such tripping mechanism to restore the cylinder 13 to printing position. When the lower end of the lever 40 is thus raisedit lifts the dog 51 out of the path of engagement of the ortion 53 of the tooth 49, and permits the 0g to ride over such tooth portion when the dog is swung by its operatin cam 54. Thus the cylinder 13 is maintaine in its lowered position as long as the foot key 40 is depressed and only when the foot key is depressed long enough for this purpose and if itis desired to repeatedly trip the cylinder 13 the foot key may be maintained in a depressed position by turning the eccentric wheel 41 to engage the depressd key 40 whereby the cam 40 and parts connected therewith are maintained in the operating position shown by Fig. 3 to keep the dog 51 from engaging the tooth portion 53. Thus, a controlling or positioning mechanism, comprising the foot key 40 and its associated parts, is provided for the press actuated mechanism for effecting the tripping and restoring movements of the cylinder 13, which, when properly positioned, allows the mechanism to function to effect the tripping movement of the cylinder and While in this position prevents the mechanism from functioning to effect the restoring movement of the cylinder.

The sheetsto be printed upon are fed to the impression cylinder 8 (Fig. 4) from the feed board or other'feed structure 73 which is mainly located in the quadrant containing the impressioncylinder. The grippers 74 upon the impresslon cylinder 8 take the sheet, numbered 75, from the feed board carrying it through the line 76 joining the centers of the shafts 7 and 25- to the line 7 7 joining the centers of shafts 7 and 14, whereupon the first printing operation is initiated, the form 13 upon the printing cylinder 13 then having printing relation with the sheet upon the impression cylinder 8. A sheet 78 (Fig. 4) upon the sheet transfer cylinder 24 is shown preceding the sheet 75, sheet 78 having been held by grippers 79 which held 13 upon the printing cylin er completes its 7 printing upon the sheet 75. During the second revolution of the impression cylinder 8 the grippers 79 upon the sheet transfer eylin er 26 take the sheet 75 being printed upon by the form 13 the grippers 74 re leasing the sheet and the grippers 79 taking the sheet when these grippers of cylinders gri pers 74 again reach line 76.

n the embodiment of the inventlon illustrated the printing element 13 is ada ted to receive offset printing, being, as lustrated, a rubber blanket that is disposed over the impression portion of the printing cylinder. The printing cylinder'13 thus constitutes a transfer impression cylinder not only forming one member of a printing couple that includes the impression cylinder- 8.but alsoone member of another printing couple which includes a printing cylinder 82. This printing cylinder supports a printing form 83 which may be a type letter or other relief form, or a planographic form. When the form 83 is a relief form it may be either unyielding or resilient, but when resilient the form 13 may be unyielding. The form 83 is inked by suitable inking mechanism as hereinafter to be described. The,

unyielding form 83 prints upon the resilient form 13 and this resilient form 13 co6perates with the impression cylinder 8 to print upon a sheet whose progress through the press has been described. The printing or form cylinder 82 has a cylinder gear 84 con nected therewith and which is in mesh with the cylinder gear 10 connected with the transfer impression cylinder 13. The cylinder gear 84 is desirabl connected with the cylinder 82 by a flexi le connection.v The flexible connection illustrated includes a member 85 in the form of a disk which per-' mits the axis of the cylinder gear 84 to re,- main fixed while the axis of the cylinder may shift, this disk or connecting means 85 being shiftable with respect to said cylinder 82 and said cylinder gear'84. The disk 85 carries two diametrically opposite slotted guideways 86, the slots of which receive diametrically opposite driving blocks 87 that are carried by the gear 84, these blocks 87' and the slots in the guideways 86 being upon the same diametrical line whereby the disk 85 may shift with respect to the gear 84 along thesdiametrical line containing the blocks 87. The disk 85' is formed w1th a groove 88 disposed along the diametrical line that is 'at right angles to the 'diametrical line containing the driving blocks 87 and guideways 86. The groove 88 receives a rib 89 carried by the disk 90 and disposed on a diametrical line of this disk. The disk 90 is fixedwith respect to the shaft 91 and the cylinder 82. The gear 84 thus may have a fixed axis while the cylinder 82 may be shifted or adjusted into and out of printing that neither'the form nor the relatibn with the transfer impression cylinder 13 transversely of the axis of its cylinder gear; In confining the gear 84'to a-fixed relation between the gear 84 and the gear 10; The form inking rollers 92, 93 are .arranged, in the embodiment of the invention illustrated, in pairs. The rollers 92 of one pair are driven by themetallic distributing roller 94 and the'rollers 93 are driven by the metallic distributing roller 95.- The rollers 94 and 95 are respectively driven by pinions 96, 97 that mesh with the pinions 98, 99 upon the rollers 94 and 95. The pinions 96 and 96 are fixed upon shaft 96? and the pinions 97 and'97 are fixed upon shaft 97 the shafts96 and 97 being journaled in the. press frame. An intermediatepinion 100 is mounted for rotation on .the press frame and meshes with pinions 96 and 97 and with gear 101 also mounted for rotation on the press frame. The gear 101 is inmesh with the gear 84, the axes of these two gears remaining in fixed relation with each ,other and with the axis of the gear 10 even though terposed between thegear 84 and the form inking rollers '92 and 93.being designed to have the peripheral speed of the inking rollersthe same as that of the cylinder 82.

I While the printing cylinder 82 is in printing position its axis is preferably coincident with the axis of the cylinder gear 84 but when the cylinder 82 is moved out of printing position its axis is then non-coincident .with the axis of this cylinder gear 84. When the cylinder 82is moved out of printing position it is also moved substantially out of inking relation with the form inking rollers 92, 93 but these form inking rollers continue to turn at substantially the peripheral speed of the cylinder 82 so that when the-cylinder 82 is restored to rinting relation with the cylinder 13 and in ring relation with the inking rollers 92, 93 there will be substantially no wiping action of these inking rollers upon form 83 or substantially no wiping, action of the form 83 upon such inkin rollers so 'ng rollers willbe injured and the inking of the form will not be marred. The peripheral speed of the form 13* and the form 83 are also the same in all positions of the cylinders 13 and 82 due to the fact that their cylinder gears have their axes maintained in fixed relation and position (due to the flexible connections.

. between these cylinders and their cylinder gears) whereby neither form 13 nor 83 will have wiping actionnpon the otherto mar or injure either; while inprinting relation whether or not the 'axesof such cylinders are coincident with the axes of their gears.

In the press illustrated the cylinder 82 is a plural revolution cylinder, rotating twice for one re'volutionof the cylinder 13. In one revolution of the cylinder 82 it prints uponthe form 13 and in the second revo1ution of this cylinder 82 it rolls over the blank or non-printing side 13 of cylinder 13.

If the form ,83 is a planographic form it is provided with moistenlng mechanism shown upon the upper side of the cyllnder 82.

I This moistening mechanism includes a water containing trough or reservoir 102 in which a suitable supply roller 103 turns. Th1s moistening mechanism includes the usual feed roller 104 mounted upon'arms 105 to which oscillatory movement is imparted whereby the roller 104 may be intermittently and alternately applied to the rollers 103 and 106. The roller 106 transfersthe water tothe mainmoistening rollers 107 that bear 4 v upon the form 83 when its cylinder 82 is in printing position. A train of gears, not shown, drives these rollers from the press mechanism. The carrying frames 102 01? the moistening mechanism are rigidly con- I nected by a rod 102 that is pivoted upon the side frames of the press. The lower end of one of the rigidly connected frames 102 rests against the eccentric stop 102. The attendant may lift the moistening mechanism from the form 83 at any time by turning the high side of the eccentric 102 into lifting engagement with the frame 102? (Fig. 4), the eccentric 102 being provided with a handle 102 for'this purpose.- The handle,

102 normally engages the stop 102 to keep the low side of the eccentric 102 opposite the frame 102. The handle 102" is limited in its moistener raising movement by the stop 102. When'the cylinder 82 is raised to non-printing position the cylinder 82 will The cylinder 82 is adapted to be brought into and out of printing relation with the cylinder 13 along the line which is inclined with res 'ect to the line 'oining the centers of the sha s of these cylinders while the cylinder 13 is moved into and out of printing relation with the cylinder 8 alongthe line that is perpendicular to the aforesaid line and which line of movement of the cylinder 13 is the vertical diametrical line 81 that defines the quadrant in which the cylinders 8 and 26 are contained, in the preferred form of the invention, and the quadrant in which the centers of the cylinders 8 and 82 are substantially included. The tripping mechani'sm which is employed for tripping the printing cylinder 82 to non-printing position isgenerally similar to the tripping mechanism. pertaining to the cylinder 13 and like parts of the two tripping mechanisms are given similar characters of reference.

The cylinder 82, however, is moved upwardly when it is tripped out of printing relation with cylinder '13 whereas cylinder 13 is moved downwardly when this cylinder is tripped out of printing relation. with cylnder 6. Springs 82 serve to elevate the cylnder 82 to non-printing position and hold it 1n that position when tripped, the position to which the springs 82 may elevate the cylinder 82 being defined and limited by the arm 49 (Fig. 1) fixed to the shaft 62 with respect to the left hand tooth 49 and the pin 71 carried by the frame of the press and engaged by the arm 49 when the cylinder 82 is m 1ts uppermost position. The left hand eccentrics 64 operate the sliding boxes 64 in the openings of the extension 64 of the cylinder shaft boxes 64 of the cylinder 82. These boxes 64 are permitted movement laterally of the line of shifting movement of the cylinder 82 in order that the eccentrics may operate them. These eccentrics 64 serve to lower the cylinder 82 to printing position, against the'force of the springs 82 the eccentrics being moved to dead center with respect to the center of the cylinder 82 to lock the cylinder 82 in printing position. The tripping mechanism of cylinder 82 differs in some respects from the tripping mechanism of the cylinder 13 and these differences will be described in connection with the mechanism which is employed for controlling this tripping mechanism to occasion' tripping movement of its cylinder 82. The trip ing function of the tripping mechanism 0 the cylinder 82 is governed by the mechanism that operates the cylinder 13. When the cylinder 13 is in prlnting relation with the impression cylinder 8 (Fig. 4) the cam 108 upon the shaft 14 is in controllin When the cylinder 13- is out of printing relation with the impression cylinder 8 (Fig. 5) the cam 108 has no controlling action over relation v to the trapping mechanismof cy inder 82.

the roller 61 of thecamarm 52 of the tripping'mechanism of cylinder 82'is passing the portion of the cam groove 60 lying between the are a 5 thereof. The function of the cam 10 is fully explained in my applicatlon Serial No. 153,469, filed March 8,1917, in which the same is ed as an element in a combination similar to the above, and needs no further explanation here. The lower end of the lever 111' carries a pin 112 which is cut by the plane of movement of the finger 46 carried by the cam arm 46. When the cam roller 110 is raised thepin' 112 engages the finger 46 and moves the cam arm 46 counterclockwise to' move the cam portion 47 into the areal path of the roller 68 that is carried by the hook 48. to prevent this hook from dropping into engagement with the tooth 49 to prevent the effecting the tripping movement of mechanism of cylinder 82 from tripping its cylinder. -When the cam roller 110 is out of engagement with the eflective portion 109 of the cam 108, the pin 112 is drawn to the right whereupon the cam arm 46 moves in a clockwise direction due to itsown weight. When the arm 46 is moved in a clockwise direction the cam portion '47 is moved in a similar direction out of the ath of the roller-'68 so that the part 50 o the hook 48 may be permitted to engage the tooth- 49 to trip the cylinder 82 out of printing relation with the cylinder 13 when the cylinder 13 is tripped out of printing relation with the cylinder 8.' In Fig. 5 the engagement of the hook 48 with the tooth 49 is shown due to the movement of the pin 112 to the right, this pin being positioned to the right when the cylinder 13 is depressed to a non-printing position, as illustrated in v Fig. 2, and in which position the cam 108 is not effective to control the lever 111 since the book 48 should be engageable with the tooth 49 when the cylinder 13 is tripped to a non-printing ition in which case the cylinder 82is trlpped to a non-printing position, as shown in Fig. 3. The hook 48and the tooth 49 of-the mechanism pertaining to cylinder 82 constitutes members of a coupler for associating the tripping mechanism ofv this cylinder with such cylinder acting Sim ilarly to the hook 48 and tooth 49 of the tripping mechanism pertaining to cylinder 13, but being controlled by a member of a printing couple rather than by a foot key The. cam portion 109 raises the and acting automatically. All that which has been said about the are a b may be sald about the tripping mechanism of cylinder 82. The trippmg action of this cylinder 82 occurs when the leading end of the form on cylinder82 passes from the line ato the line 6 In the arrangement of the tripping mechanism of the cylinder 82 the cam gear 55 thereof meshes with the broad faced pin ion 55, this pinion in turn meshin with cam gear 55 of cam 54 of the tripping mechanism of cylinder 82, said gears 55, 55

being in diiferent planes of rotation.

mechanism and out of moistening relation with one of its moistening rollers while cylinder 13 is tripp'ed. The cylinder 82 is maintained in its tripped position, while the cylinder 13 is being repeatedly tripped, by the same foot key 40 that causes the cylinder 13 to be tripped. In order that the key 40 may serve th1s purpose it is in operating connection with a cam lever 113 that is pivotally mounted upon the frame ofthe machine, the connection of the foot key with the cam lever 113. includi a link 114 pivotally connected at one end with the lever 113 and at its other end with the arm 115 that is in fixed relation with the arm 44 and the rod 45. When the foot key 40 is depressed the lower, end of cam lever 113 is raised to be in the path of movement of andto engage the roller 116 carried by the rocking dog 117 pivoted 'at 118 on the rear side of the arm 52, whereby this rocking dog is relieved of its function of coupling the tripping mechanism of cylinder 82 with such cylinder to prevent this tripping mechanism from lowering or restoring the cylinder 82 to printing position. In performing this function the dog normally engages the part 53 of the tooth '49 and as the dog 117 is pivoted at 118 to the arm 52 the arm-52 is, through theinterthe tripping mechanism of cylinder 82 with the cylinder to enable such tripping mechanism to lower the cylinder 82 to printing position. When the lower end of the lever 113 is thus raised it lifts the dog 117 out of the path of engagement of the portion 53 of the tooth 49, and permits the dog to ride over such tooth portion when the dog is by its operating cam 54. Thus the cylinder 82 is maintained in its raised or tripped osition by the spring 82 as long as the oot' key 40 1s depressed and only when the foot key is depressed long enough for this purpose and if it is desired to repeatedly trip I the cylinder'82 the'foot key may be mam- 1 key 40 whereby the cam 113 and parts con- .tained. in a depressed position by turning the eccentric wheel 41 to engage the depressed nected therewith are maintained in the operating osition shown in Fig. 3 to keep the dog 11 from engaging the tooth portion 53. It will be noted at'this point that, when the key 40 of the controlling mechanism is depressed, the tripping mechanism of the cylmove the'lever lllito produce the same action that the cam 108 produces this lever may .be equipped with a handle 111 for this purpose. The influence of the cam 108 upon the lever 111 may be removed by providing a shiftable mounting fulcrum for the lever.

To this end the trunnion pin 111 of'the lever 111 is eccentrically mounted upon the stub shaft 111 that is journaled in the frame of the press. This stub shaft 111 is provided with a handle 111* which normally my invention I do not wish to be limited to rests against the stop 111 When the handle 111 is moved around against the stop 111 the fulcrum 111 of the lever 111 is elevated to place this lever in the position illustrated in Fig. 4, and in which position the roller 110 is without the operating range of the cam 108 and the pin 112 is maintained out of engagement with the finger 46 While I. have herein shown and particu ing position, thc.first cylinder losing control over the coupler operating mechanism when the firstcylinder is out-of operating position.

3. A rinting press including a cylinder; means or moving the cylinder into and out of operative position; a second cylinder; means for effecting tripping movement of the second cylinder; a coupler for connecting the second cylinder with its tripping mechanism; and positioning means governed by the first cylinder when in operating position for preventing the coupler from connecting the second cylinder with its tripping mechanism.

4;. A printing press including a cylinder; means for moving the cylinder into and out of operative position; a second cylinder; means for effecting tripping movement of the second cylinder; a coupler for connecting the second cylinder with its tripping mechanism; and positioning means governed b the first cylinder when in operating position for preventing the coupler .from connecting the second cylinder with its tripping mechanism, the first cylinder having its influence upon the positioning means removed when this first cylinder is out of operating position to permit said tripping mechanism to be coupled with the second cylinder.

5. A printing press includinga cylinder; means for moving the cylinder into and out of operative position; a second cylinder; means for efiecting tripping movement of the second cylinder; a coupler for connecting the second cylinder with its tripping mechalarly described the preferred embodiment oi'rlnism; positioning means governed by the the precise details of construction shown as changes may readily be made without de- 'parting from the spirit of my invention, but having thus described my invention I claim as new and desire to secure by Letters Patent the following:

. 1 A printing press including a cylinder; means for moving the cylinder into and out of operative position; a second cylinder; means for effecting tripping movement of the second cylinder; a coupler for connecting the second cylinder with its tripping mechanism; and mechanism for operating the coupler to disconnect the second cylinder from its tripping mechanism and operable by the first cylinder when in operating position.

first cylinder When in operating position for preventing the coupler from connecting the second cylinder with its tripping mechanism, the first cylinder having its influence upon the positioning means removed when this first cylinder is out of'operating position to permit said tripping mechanism to be coupled with the second cylinder; and attendant controlled means for preventing the coupler from connecting the second cylinder with its tripping mechanism when the first cylinder is out of operating position.

6. A printing press including a cylinder; means for moving the cylinder into and out of operative position; a second cylinder; means for effecting tripping movement of the second cylinder; a coupler for connecting the second cylinder with its tripping mechation to permit said tripping mechanism to be. coupled with the second cylinder: and attendant controlled means for effecting connection of the second cvlinder with its tripping mechanism while the first cylinder is in operating position.

7. A orinting press including a cylinder; means for moving the cylinder into and out of operative position; ,a second cylinder; means for effecting tripping movement of the second cylinder; a coupler for connecting the second cylinder with its tripping mechanism; positioning means governed by the first cylinder when in operating position for preventing the coupler from conmeeting the second cylinder with its tripping mechanism, the first cylinder having its influence upon the positioning means removed when this first cylinder is out of operating position to permit said tripping mechanism to be coupled with the second cylinder; attendant controlled means for preventing the coupler from connecting the second cylinder with its tripping mechanism when the first cylinder is out of operating position; and attendant controlled means for effecting connection of the second cylinder with its tripping mechanism while the first cylinder is in operating position.

8. A printing press including a printing cylinder; an impression cylinder in printing relation with the printing cylinder; means for moving the printing cylinder into and out of operative position; a form cylinder in printing relation with the printing cylinder; means for effecting tripping ovement of the form cylinder; means for effecting restoring movement of the form cylinder; mechanism controlled by the printing cylinder fordirectly controlling the tripping mechanism of the form cylinder; and attendant controlled means for controlling the restoring movement of the form cylinder.

A printing press including a printing cylinder; an impression cylinder in printing relation with the printing cylinder; means for moving the printing cylinder into and out of operative position; a form cylinder in printing relation with the printing cylinder; means for effecting tripping movement of the form cylinder; means for efs fectingrestoring movement of the form cylinder; mechanism controlled by the printing cylinder for directly controlling the tripping mechanism of the form cylinder; attendant controlled means for controlling the restoring movement of the form cylinder; and attendantcontrolled means foralso controlling the tripping movement of the form cylinder.

10. A printing press including a pl'lllblng cylinder; an impression cylinder in printing relation with the printing cylinder; means for moving the printing cylinder into and out of operative position; a planographic form cylinder in printing relation with the printing cylinder; means for effecting tripping movement of the form cylinder; means for effecting restoring movement of the form cylinder; mechanism controlled'by the printing cylinder for directly controlling the tripping mechanism of the form cylinder; and attendant controlled means for controlling the restoring movement of the form cylinder.

11. A printing press including a printing cylinder; an impression cylinder in printing relation with the printing cylinder; means for moving the printing cylinder into and out of operative position; a planographic form cylinder-in printing relation with the printing cylinder; means for effecting tripping movement of the form cylinder; means for effecting restoring movement of the form cylinder; mechanism controlled by the printing cylinder for directly controlling the tripping mechanism of the form cylinder; attendant controlled means for controlling the restoring movement of the form cylinder; and attendant controlled means for also controlling the tripping movement of the form cylinder.

12. A rotary planographic printing press including a printing couple containing an impression cylinder and a transfer impression cylinder; a form cylinder in printing relation to the transfer impression cylinder; moistening mechanism for the form cylinder; tripping mechanism for breaking the printing relation between cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the transfer impression cylinder; means for moving said moistening mechanism toward a non-moistening position when said last mentioned tripping mechanism is actuated to break the printing relation between said form and printing cylinder; a coupler for operatively associating the latter tripping mechanism with its cylinder; and means governed by the mechanism of said printing couple when der; tripping mechanism for breaking the printing relation between cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation be tween said form cylinder and the transfer impression cylinder; means for moving said moistening mechanism toward a non-moistening position when said last mentioned tripping mechanism is actuated to break the printing relation between said form and printing cylinders; a coupler for operatively associating the latter tripping mechanism with its cylinder; means governed by the mechanism of said printing couple when the members of said couple are in printing relation for preventing said coupler and its associated tripping mechanism from functioning; and attendant controlled means for causing said form cylinder to be in connection with its tripping mechanism.

14. A rotary printing press including a printing couple containing an impression cylinder and a printing cylinder; a form cylinder in printing relation to the printing cylinder; tripping mechanism for breaking the printing relation between cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the printing cylinder; a coupler for operatively associating the latter tripping mechanism with its cylinder; and means governed. by the mechanism of said printing couple when the members of said couple are in printing relation for preventing said couple-r and its associated tripping mechanism from functioning.

15. A rotary printing press including a printing couple containing an impression cylinder and a printing cylinder; a form cylinder in printing relation to the printing cylinder; tripping mechanism for breaking the printing relation between cylinders of the aforesaid printing couple; tripping mechanism for breaking. the printing relation between said form cylinder and the printing cylinder; a coupler for operatively associating the latter tripping mechanism with its cylinder; means governed by the mechanism of said printing couple when the members of said coupler are in printing relation, for preventing said coupler and its associated tripping mechanism from functioning; and attendant controlled means for causing said form cylinder to be in connection with its tripping mechanism.

16. A rotary planographic press including a form cylinder; inking mechanism for the form cylinder; moistening mechanism for the form cylinder; tripping mechanism for moving the form cylinder out of inking relation with the inking mechanism; and means whereby the form cylinder wil move the moistening mechanisn'i partially out of relation with the form cylinder when this cylinder is tripped.

17. A rotary planographic press including a form cylinder; inking mechanism for the form cylinder; moistening mechanism for the form cylinder, this moistening mechanism including a plurality of moistening rollers; tripping mechanism for moving the form cylinder out of inking relation with the inking mechanism; and means whereby the form cylinder will move the moistening mechanism partially out of relation with the form cylinder by removing one of said moistening rollers from engagement with the form cylinder when said form cylinder is tripped.

18. A rotary planographic press including a form cylinder; inking mechanism for the form cylinder; moistening mechanism for the form cylinder, this moisteningmechanism including a plurality of moistening rollers and a swingingly mounted frame that supports said rollers; tripping mechanism for moving the form cylinder out of inking relation with the inking mechanism, said form cylinder and moistening mechanism being relatively positioned to enable the form cylinder to swing the moistening mechanism to remove one of the moistening rollers from the form cylinder without removing the other when the form cylinder is placed out of inking relation with the inking mechanism.

19. A rotary planographic press including a printing couple that contains a form cylinder; inking mechanism for the form cylinder; moistening mechanism for the form cylinder; tripping mechanism for placing the form cylinder out of printing relation; and means whereby the form cylinder will move the moistening mechanism partially out of relation with the form cylinder when moved to non-printing position.

20. A rotary planographic press including a printing couple that contains a form cylinder; inking mechanism for the form cylinder; moistening mechanism for the form cylinder, this moistening mechanism including a plurality of moistening rollers; tripping mechanism for placing the form cylinder out of printing relation; and means whereby the form cylinder will move the moistening mechanism partially out of relation with the form cylinder when moved to non-printing position by removing one of said moistening rollers from engagement with the form cylinder.

21. A rotary planographic press including a printing couple that contains a form cylinder; inking mechanism for the form cylinder; moistening mechanisn'l for the form cylinder. this moistening mechanism including a plurality of moistening rollers and a swingingly mounted frame that supports said rollers; tripping mechanim for placing the form cylinder out of printing relation,

said form cylinder and moistening mecha- 22. A rotary planographic press includ- I ing a printing couple that contains a form cylinder; inking mechanism for the form cylinder; moistening mechanism for the form cylinder; tripping mechanism for tripping the form cylinder out of relation with the inking mechanism and out of printing position; and means whereby the form cylinder will move the moistening mechanism partially out of relation with the form cylinder when tripped. t

23. A movably mounted cylinders; of a press'actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with one of said mechanisms and adapted to control the same and having-operable connection with the other mechanism and adapted to control the same relatively to its restoring function; and automatic mechanism having operable connection with said other press actuated mechanism and adapted to control the same relatively to' its tripping function; v 24. A rotary printing'preSS including two movably mounted cylinders; of a press actuated mechanism for each cylinder having operable connection with its respective cylnder and being adapted to trip the same out 0f printing position and to restore the sameinto printing position; a controlling mechanism having operable connection with one of said mechanisms and adaptedto control the same relatively to its tripping function and having operable connection with the other mechanism and adapted to control the same relatively to its restoring function;

and automatic mechanism having operable connection with said other press actuated mechanism and adapted to control the same relatively toits tripping function.

25. A rotary printing press including two movably mounted cylinders; of a pressactuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with one of said mechanisms and adapted to control the same relatively to its tripping and rotary printing press including two restoring functions and having operable connection with the other mechanism and adapted to control the same'relatively to its restoring function; and automatic mechanism having operable connection with said other press actuated mechanism and ada ted tocontrol the samerelatively to its tripping function.

\ 26. A rotary printing press including two movably mounted cylinders; of a press-actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restorethe same into printing-position; a controlling mechanism having operable connection with one of said mechanisms and adapted to control the same-and having operable connection with the other mechanism and adapted to control the same relatively to its restoring function, said controlling mechanism being adapted to be positioned to allow said one mechanism to function to trip and while in this position to prevent said other mechanism to function to restore; and

automatic mechanism having operable connection with said other press actuated mechanism and adapted tocontrol the same relatively to its tripping function.

I A rotary printing preSS including two movably mounted cylinders; of a press ac tuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with one of said mechanisms and adapted to control the same relatively to its tripping function and having operable connection with the other mechanism and adapted to control the same relatively to its'restoring function, said controlling mechanism being adapted to be positioned to allow said one mechanism to function to trip and while in this position to prevent said other mechanism to function to restore.

28. A rotary printing press including two movably mounted cylinders; of a press actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with one of said mechanisms and adapted to control the same relatively to its tripping and restoring functions and having operable connection with the other mechanism and adapted tocontrol the same relatively to its while'in this position to prevent both of said IIJI.

control the same relatively to its trippingfunction.

29. A rotary printing press including a movably mounted cylinder; of a second movably mounted cylinder; of a press actuated mechanism for each cylinder having i operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with the press actuated mechanism of the first cylinder andadapted to control the same and having operable connection with the press actuated mechanism of the first cylinder and adapted to control the same relatively to its restoring function; and mechanism operated by the movement of'said first cylinder out of and into printing position and having operable connection with the press actuated mechanism of said second cylinder and adapted to prevent said mechanism from functioning to trip when said first cylinder is in printing position.

30. A rotary printing press including a movably mounted cylinder; of a second movably mounted cylinder; of a press actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position, a controlling mechanism having operable connection with the press actuated mechanism of the first cylinder and adapted to 'control the same relatively to its tripping function and having operable connection with the press actuated mechanism of said second cylinder and adapted to control the same relatively to its restoring function, and mechanism operated by the movement of said first cylinder out of and into printing position and having operable connection with the press actuated mechanism of said second cylinder and adapted to prevent said mechanism from functioning to trip when said first cylinder is in printing position.

31. A rotary printing press including a movably mounted cylinder; of a second movably mounted cylinder; of a press actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with the press-actuated mechanism of the first cylinder and adapted to control the same rela-- tively to its tripping and restoring functions, and having operable connection with the press actuated mechanism of said second cylinder and adapted to control the same relatively to its restoring function; and mechanism operated by the movement of said first cylinder out of and into printing position and having operable connection with the press actuated mechanism of said second cylinder and adapted to prevent said mechanism from functioning to trip when said first cylinder is in printing position.

32. A rotary printing press including a movably mounted cylinder; of a second movably mounted cylinder; of a press actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with the press actuated mechanism of the first cylinder and adapted to control the same and having operable connection with the press actuated mechanism of said second cylinder and adapted to control the same relatively to its restoring function, said controlling mechanism being adapted to be positioned to allow the press actuated mechanism of said first cylinder to function to trip and, while in this position, to allow said other mechanism to function to restore; and mechanism operated by the movement of said first cylinder out of and into printing position and having operable connection with the press actuated mechanism of said second cylinder and adapted to prevent said mechanism from functioning to trip when said first cylinder is in printing position.

33. A rotary printing press including a movably mounted cylinder; of a second movably mounted cylinder; of a press actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same adapted to control the same relatively to its restoring function, said controlling mechanism being adapted to be positioned to allow the press actuated mechanism of said first cylinder to function totrip and, while in this position, to allow said other mechanism to function to restore; and mechanism operated by the movement of said first cylinder out of and into printing position and having operable connection with the press actuated mechanism of said second cylinder and adapted to prevent said mechanism from functioning to trip when said first cylinder is in printing position.

34:. A rotary printing press Including a movably mounted cylinder; of a second movably mounted cylinder; of a press actuated mechanism for each cylinder having operable connection with its respective cylinder and being adapted to trip the same out of printing position and to restore the same into printing position; a controlling mechanism having operable connection with the press actuated mechanism of the first cylinder and adapted to control the same relatively to its tripping and restoring functions and having operable connection with the press actuated mechanism of said second cylinder and adapted to control the same relatively to its restoring function, said controlling mechanism being adapted to be positioned to allow the press actuated mechanism of said first cylinder to function to trip and, while in this position, to prevent both of said press actuated mechanisms from functioning to restore, and mechanism operated by the movement of said first cylinder out of and into printing position andnhaving operable connection with the press actuated mechanism of said second cylinder and adapted to prevent said mechanism from functioning to triprwhen said first cylinder is in printing position.

35. A rotary planographic printing press including a printing couple containing an impression cylinder and a transfer impression cylinder; a form cylinder in printing relation to the transfer impression cylinder; moistening mechanism for the form cylinder; tripping mechanism for breaking the printing relation between the cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the transfer impression cylinder; automatic means operating upon said moistening mechanism to move the same toward a disengaged position relative to moistening said form cylinder when said form cylinder is ,moved to tripped position; a coupler for operatively associating the latter tripping mechanism with its cylinder; and means governed bythe mechanism of said printing couple, when the members of said couple are in printing relation, for preventing said coupler and its associated tripping mechanism from functioning. v

36. A rotary offset printing press including a printing couple containing, an impression cylinder and a transfer impression cylinder; a form cylinder in printing relation to the transfer impression cylinder; tripping mechanism for breaking the printing relation between the cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the transfer impression cylinder; inking mechanism for said form cylinder and disposed to be substantially out of inking relation with said form cylinder when it is in the position into which it is moved when trip ed; a coupler for operatively associating the latter tripping mechanism with its cylinder; and means governed by the mechanism of said printing couple, when the members of said couple are in printing relation, for preventmg mechanism from functioning 37. A rotary planographic printing press including a printing couple containlng an impression cylinder and a transfer impression cylinder; a form cylinder in printing relation to the transfer impression cylinder; moistening mechanism for the form cylinder; tripping mechanism for breaking the printing relation between the cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the transfer impression cylinder; inking mechanism for said form cylinder and disposed to be substantially out of inking relation with said form cylinder when it is in the osition into which it is moved When trippe automatic means operating upon said moistening mechanism to move the same toward a disengaged position relative to moistening said form cylinder when said form cylinder is moved to tripped position; a coupler for operatively associating the latter tripping -mechanism with its cylinder; and means governed by the mechanism of said printing couple, when the members of said couple are in printing relation, for preventing said coupler and its associated tripping mechanism from functioning.

said coupler and its associated tripping I 38. A rotary planographic printing press.

includinga printing couple containing an impression cylinder and a transfer impression cylinder; a' form cfylinder in printing relation to the trans er impression cylinder; moistening mechanism for the form cylin- 'der; tripping mechanism forbreaking the printlng relation between the cylinders of.

the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the transfer impression cylinder; automatic means operating upon said moistening mechanism to move the same toward a disengaged position relative to moistening said form cylinder when said form cylinder is moved to tripped position; a coupler for operatively associating the latter tripping mechanism with its the mechanism of said printing couple, when cylinder; means governed by the members of said couple are in printing relation, for preventing said coupler and its associated tripping mechanism from .func-' tioning; and attendant controlled means for causing said form cylinder to be in connectionwith itstripping mechanism.

39. A rotary offset printing press includ ing a printing couple containing an imprescylinder when it is in the position into which it is moved when tripped; a coupler for operatively associating the latter tripping mechanism with its cylinder; means governed by the mechanism of said printing couple, when the members of said couple are in printing relation, for preventing said coupler and its associated tripping mechanism from functioning; and attendant controlled means for causing said form cylinder to be in connection with its tripping mechanism. Y

40. A rotary planographic printing press including a printing couple containmg an impression cylinder and a transfer impression cylinder; a form cylinder in printing relation to the transfer impression cylinder; moistening mechanism for the form cylinder; tripping mechanism for breaking the printing relation between the cylinders of the aforesaid printing couple; tripping mechanism for breaking the printing relation between said form cylinder and the transfer impression cylinder; inking mechanism for said form cylinder and disposed to be substantially out of inking relation with said form cylinder when it is in the position into which it is moved when tripped; automatic means operating upon said moistening mechanism to move the same toward a disengaged position relative to moistening said form cylinder when said form cylinder is moved to tripped position; a coupler for operatively associating the latter tripping mechanism with its cylinder; lneans governed by the mechanism of said printing couple, when the members of said couple are. in printing relation for preventing said coupler and its associated tripping mechanism-from functioning; and attendant controlled means for causing-said form cylinder to be in connection with its tripping mechanism.

In witness whereof, I hereunto subscribe my name this eleventh day of April A. 1).,

ROBERT MIEHLE. 

